Also something like phentermine, without a prescription?

Unfortunately, yes.
And not only is it illegal, but extremely dangerous.
Those substances were banned for a reason. They cause unsafe heart rate increases and heightened blood pressure, in addition to numerous other life-threatening side effects.

If the amount of epherda is the prebanned amount (25mgs per serving) then yes. If it is the post banned amount (10mgs per serving) then no. As for phen and other usually prescribed drugs, I would stay away from them. They're prescribed for a reason and taking a drug like that w/o doctor supervision is dangerous. Ephedra is in cough meds, asthma meds, ect and is only considered a diet pill when mixed w/ aspirin and caffeine. Sites like fixfitness.com still sell Ephedra and I buy from them. I use usps, so if it was illegal, I would assume the state would forbid the selling of it through the post office. Just my two cents.